Assam's tallest tropical tree, Holong, adapted to monsoon conditions
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The Better India
thebetterindia.com

Assam's tallest tropical tree, Holong, adapted to monsoon conditions

Recent floods struck the areas of Sivasagar, Jorhat, and Charideo in Assam, forcing families to leave their homes, inundating agricultural lands, and damaging roads and bridges.

Although forests cannot completely prevent flooding, the tropical forests of Assam have long helped absorb, slow down, and redistribute a significant portion of the abundant rainfall characteristic of the monsoon season.

The central element of these forests is the Holong, which is recognized as the state tree of Assam and belongs to one of the tallest local species of tropical forests in India. In the Northeast region, it can reach heights of up to 50 meters.

Holong survives in conditions where the average annual precipitation approaches 3000 mm. Its deep root system ensures the stability of the massive trunk in swampy soils during severe storms and prolonged monsoon periods.

The large, leathery leaves of the tree quickly shed torrential streams of water. This helps prevent fungal damage and reduces the load on branches during prolonged rains.

After the monsoon season ends, the winged seeds of the Holong are dispersed by seasonal winds. This allows them to be carried away from the saturated soil, providing new seedlings the opportunity to take root.

This tree dominates several tropical evergreen forests in Assam, including the Hollongar-Gibbon, Dehing Patkai, and Nameri reserves, as well as the forest landscapes of Kaziranga.

Its immense height plays a role in shaping the forest's microclimate, creating cooler and more stable conditions under the canopy. These forests also accumulate significant amounts of terrestrial carbon.

However, centuries of deforestation and habitat degradation have had a serious negative impact. Estimates suggest that the Holong population has decreased by 50–70%, leading to the species being classified as endangered in the wild.

The Holong represents more than just the state tree of Assam; it is part of a monsoon-influenced forest ecosystem that supports biodiversity, retains soil, and helps regulate the surrounding landscape.

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Bulldozer demolished structures near Medical College in Jhansi; vendors requested postponement
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www.aajtak.in

Bulldozer demolished structures near Medical College in Jhansi; vendors requested postponement

A riot occurred in the city of Jhansi, Uttar Pradesh, during an operation to demolish illegal constructions carried out by the Municipal Corporation. A group of Municipal Corporation employees, accompanied by three bulldozers and a police patrol, began dismantling kiosks, carts, and temporary stalls located along the road. Some carts were lifted by bulldozers, while other temporary shops were destroyed.

During the work, vendors present at the scene tried to plead with the team for a postponement, holding their hands up before them. This incident took place near the Maharani Lakshmi Bai Medical College.

Many people earned a living by setting up carts and temporary stalls in this area. The Municipal Corporation's emergency team arrived at the site with three bulldozers and police forces. The team started removing illegal constructions erected along the road from Gate No. 1 to Gate No. 3 of the Medical College. As the bulldozers moved forward, panic broke out among the present vendors. Some tried to gather their belongings, while others ran to the team to protect their carts.

Some vendors were seen holding their hands up to the Municipal Corporation employees, claiming that these carts and shops were the source of income for their families. Despite requests from some people to grant a small delay, the work continued. The Municipal Corporation confiscated several carts, and some temporary stalls and tumpers were demolished. During this process, some people also protested the team's actions, leading to disorder at the scene.

Vendors Nitu and Nikita Verma expressed their dissatisfaction with the team's actions. They claim that the team demolished their shops and took away their carts. Nitu stated that she is ill and undergoing treatment. Due to her illness, she had not opened her shop for two days. When she learned about the arrival of the illegal construction enforcement team, she came to the site but lost the cart key in the crowd and could not remove it in time. She accused the team of taking the cart and demolishing the tumper afterward. Furthermore, she claimed that her son's mobile phone was taken from him and he was treated roughly, although these accusations were not confirmed.

Pradip Agnihotri, the head of the illegal construction enforcement team, reported that the demolition operation started at the Virangan police station and was conducted from Gate No. 1 to Gate No. 3 of the Medical College. The team leader stated that the illegal constructions along the road were causing problems with dirt and traffic jams. He added that people were informed about the upcoming actions one day in advance, and the team had repeatedly asked the vendors to remove the structures during patrols. According to Pradip Agnihotri, the Municipal Corporation had to act because people did not remove their structures.

The Municipal Corporation team also warned the vendors that they were prohibited from setting up shops or carts in that location again. On one hand, the Municipal Corporation insists that the illegal constructions around the road and medical college were creating problems with congestion and unsanitary conditions, while on the other hand, the vendors view it as a matter of their livelihood.

Expert advises farmers to consider water and soil quality for effective drip irrigation
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foodformzansi.co.za

Expert advises farmers to consider water and soil quality for effective drip irrigation

The success of drip irrigation depends not only on using quality equipment but also on careful planning, as well as regular operation and maintenance. Byron La Trobe, a technical consultant for Netafim in Southern and Eastern Africa, emphasized the importance of these aspects for achieving higher yields.

When choosing drip irrigation systems, farmers should understand that selecting equipment is only one part of the task. It is critically important to study water quality, soil condition, uniformity of irrigation, and maintain the system in working order to maximize the return on investment.

Before installing a drip irrigation system, farmers must analyze the conditions on their agricultural land. La Trobe recommends knowing both the water quality and the soil characteristics. Water analyses help determine the necessary filtration requirements and suitable water delivery rates through drippers, while soil properties influence the spacing between drippers and the irrigation schedule.

According to La Trobe, conducting such analyses represents a relatively small expenditure compared to the potential costs that may arise from incorrect irrigation system design.

Irrigation uniformity plays a significant role in crop productivity and growth, especially for crops with shallow root systems. Closer placement of drippers promotes better coverage of moist zones, which minimizes dry spots between emitters and ensures a more balanced distribution of water along the rows of plants.

When plants receive the same amount of moisture, root development and nutrient uptake become more stable. However, poor uniformity can lead to some parts of the field being overwatered while others receive insufficient water, causing uneven growth and potentially reducing yield. The stability of water and nutrient supply also contributes to more uniform stem, flower, or fruit development.

Drip irrigation offers a significant advantage during flowering because it concentrates water around the root zone while keeping the surrounding cover and environment for flowers relatively dry. This is especially important when successful pollination is required for a good harvest. La Trobe notes that overhead watering during flowering can create unfavorable conditions for bees, so creating a favorable environment for pollinators should be part of the irrigation strategy.

Water quality can significantly affect irrigation management. Farmers should regularly measure electrical conductivity (EC) in both water and soil, and consult an agronomist if salinization problems arise. Since different crops tolerate salinity differently, the volume of additional water needed to manage salts in the root zone will vary. Additional irrigation also increases pumping costs and raises the risk of fertilizer leaching beyond the root zone. Regular soil and water analysis helps farmers make more informed decisions regarding crop selection and irrigation management.

Given the pressure on fertilizer prices, La Trobe believes that precise fertilization (fertigation) opens up significant opportunities for farmers. Instead of applying fertilizers in large doses at once, nutrients can be supplied over a longer period, ensuring their more constant availability to the crop. Smarter fertigation management also reduces the likelihood of nutrient leaching below the root zone. As La Trobe says: 'Every drop of fertilizer that leaches outside the root zone is a loss of money.'

For suitable crops, thin-walled drip lines can serve as a practical seasonal replacement for thick-walled reusable systems. These lines can be replaced each season, allowing farmers to start with new lines instead of managing accumulated deposits from previous seasons. Nevertheless, proper field preparation is necessary. Farmers must remove prickly weeds, sharp stones, and debris that could puncture the drip lines during installation or during the season. La Trobe also advises considering the use of mechanized equipment for installation and removal to reduce labor costs and prepare fields faster for the next planting.

One of the most common mistakes farmers make is underestimating the importance of filtration. La Trobe warns: 'Never forget the filter.' Poor filtration can lead to clogging of drippers, uneven water distribution, and ultimately, reduced yield. Investing in a proper filtration system from the beginning can prevent costly problems in the future.

La Trobe concludes that success in irrigation boils down to one simple principle: understand your water, understand your soil, and design your system accordingly.

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