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Agronomy

WATER MOVEMENT MECHANISM IN PLANTS

In plants, following two pathways are involved in the water movement. They are (1) Apoplastic pathway (2) Symplastic pathway (3) Transmembrane pathway 1. Apoplastic pathway¬† The apoplastic movement of water in plants occurs exclusively through the cell wall without crossing any membranes. The cortex receive majority of water through apoplastic …

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ABSORPTION OF WATER

We know from a very early age that plants obtain water through their roots, though it is not perhaps until our school biology lessons that we learn of the important role that water plays in the process of photosynthesis. Most of the water absorption is carried out by the younger …

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Water Potential & its Components

Most organisms are comprised of at least 70% or more water. Some plants, like a head of lettuce, are made up of nearly 95% water. When organisms go dormant, they loose most of their water. For example, seeds and buds are typically less than 10% water, as are desiccated rotifers, …

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Water Requirement of Different Crops in India

Crop Water Requirement (mm) Rice 900-2500 Wheat 450-650 Sorghum 450-650 Maize 500-800 Sugarcane 1500-2500 Groundnut 500-700 Cotton 700-1300 Soybean 450-700 Tobacco 400-600 Tomato 600-800 Potato 500-700 Onion 350-550 Chillies 500 Sunflower 350-500 Castor 500 Bean 300-500 Cabbage 380-500 Pea 350-500 Banana 1200-2200 Citrus 900-1200 Pineapple 700-1000 Gingelly 350-400 Ragi 400-450 …

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CROPPING PATTERN, CROPPING SYSTEM & INTENSIVE CROPPING

Traditionally, increased food production has come from putting more land under cultivation. However, in large areas of the world, especially in Asia, all the land that can be economically cultivated is already in use. In future, most of the extra food needs must come from higher production from land already …

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