By Prakash Kumar
Nutrient imbalance in soils is an rising probability to sustainable agriculture: in depth cultivation, use of bad caliber groundwater, depletion of soil natural subject and over the top use of fertilizers are significant purposes for negative soil fertility world wide. Richly illustrated with six hundred colour photos, this publication is a visible box identity consultant for indicators of commonest nutrient deficiencies in box vegetation, masking all their levels of prevalence. specified descriptions and urged for administration practices are given with each one access.
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Additional info for Nutrient Deficiencies of Field Crops: Guide to Diagnosis and Management
3. Indicator weeds. Digital pH meter Soil pH is one of the most important properties of the soil that affects the availability of nutrients to the plant (Table 3). A plant nutrient expert must consider this fact while assessing the nutrient deficiency symptoms. Digital pH meters are available today to measure soil pH in situ, on the spot. The correlation of soil pH values with nutrient availability to the plant is very helpful to make an idea of the deficiency. Table 3. Soil pH and nutrient availability.
8. Susceptible hybrid rice cultivars. Integrated nutrient management 1. Get the soil analysed before planting to measure the amount of ‘available’ potassium in the soil. 2. Add organic manures well before planting. 3. Apply potassium nitrate, potassium sulphate, potassium chloride or a compound fertilizer such as N:P:K to the soil at planting as per soil testing recommendations. 4. Potassium can also be applied in two or three split applications for better use in the rice crop: the ﬁrst dose at planting, the second dose at panicle initiation (40–50 days after transplant) and the third at ﬁrst ﬂowering (60–70 days after transplanting).
1987) Hungry Crops: A Guide to Nutrient Deﬁciencies in Field Crops. Queensland Department of Primary Industries, Brisbane, Australia. A. H. (1995) Nitrogen deﬁciency in maize: I. Effects on crop growth, development, dry matter partitioning and kernel set. Crop Science 36, 1376–1383. A. H. (1995) Nitrogen deﬁciency in maize: II. Carbon–nitrogen interaction effects on kernel number and grain yield. Crop Science 35, 1384–1389. J. A. ) growth, leaf pigment concentration, photosynthesis and leaf hyperspectral reﬂectance properties as affected by nitrogen.