Effect of calcium, magnesium and boron on nutrient uptake and yield of rice in Kole lands of Kerala

Abstract

The Kole lands a unique wetland ecosystem of Kerala, is located 0.5-1.0m below mean sea level. An experiment was conducted in College of Horticulture, Vellanikkara, Kerala to study the influence of secondary and micronutrients viz. calcium, magnesium and boron on nutrient uptake and yield of rice in Kole lands. Six treatments including the soil test based nutrient application, package of practices recommendation (POPR) of Kerala Agricultural University for rice, combinations of the POPR with magnesium, calcium silicate, boron and absolute control were applied in the crop in a randomized block design with three replications. Higher uptake of nutrients especially primary and micronutrients were noticed by boron and calcium silicate application and lower uptake of Fe and Mn, thereby resulted in higher grain yields of 7.67 t/ha and 7.18 t/ha respectively and straw yield was higher by application of magnesium. Correlation analysis revealed that total uptake of boron, calcium and magnesium had positive and significant correlation with yield whereas negative correlation existed between Fe uptake and yield.

Study the effect of boron levels on yield attributes of rice crop

“…In rice, B reduces panicle sterility and induces the fertility due to high pollen and anther development and pollen germination which induces the number of filled grains panicale -1 and therefore, yield. These are in conformity with those already reported by Aslam et al (2002) [5] , Ali et al (2016) and Rani and Latha (2017) [20] . Minimum number of unfilled grains panicle -1 of rice (20.80) respectively, were noticed with the application of T 10 [2.0 kg B ha -1 (SA) + 0.3% B spray twice at 25 & 50 DAT]Table -2.This may be attributed to the reason that B deficiency, pollen grain appears empty and induces sterility in rice and directly affected the pollen vitality.…”

Isotopic Composition and Fractionation of Stable Magnesium Isotopes in Relation to Fruits Growing in Different Regions of Russia

“…Qualitative indicators of vegetable raw materials are determined by many factors such as the zone of growth and agrotechnical methods of cultivation (Postnikov et al, 2021;Yakovenko et al, 2020;Firdous and Subhash, 2017;Kumar et al, 2017;Rani and Latha, 2017). When studying the mineral composition of apple fruits, a database was formed for more than 500 samples according to the level of accumulation of magnesium cations depending on the phase of fruit development -fruit size of 8-12 mm, 40 days before ripening and removable maturity (Prichko et al, 2019).…”

A review on zinc and boron nutrition in rice

“…Remesh and Rani (2017) opined that soil application of B @ 1kg ha -1 recorded the highest grain yield (5502.85 kg ha -1 ). Rani and Latha (2017) reported that application of borax @10 kg ha -1 along with recommended dose of NPK recorded the highest grain yield of 7.67 t ha -1 . Boron fertilization on B availability in soil and uptake by rice: Application of B fertilizer enhances the uptake of B within the rice plant, but only less than 40 per cent is stored in grain and remaining portion is accumulated in leaves and stem (Katyal and Singh,1992).…”

“…The dry matter production was also significantly influenced by foliar spray of B @ 20 mg L -1 (Ali et al, 2016). The highest DMP of 15.57 t ha -1 was recorded with the application of borax 10 kg ha -1 along with FYM 5t ha -1 , recommended NPK and lime 600 kg ha -1 in Kole lands of Kerala (Rani and Latha, 2017). Boron fertilization on physiological parameters of rice: Soil application of B and Zn @ 3 and 6 kg acre -1 enhanced the chlorophyll a, b and the total chlorophyll content (Arif et al, 2012).…”