Effect of N, ZN and FE Application on N, P, K Content and Their Total Uptake in Parmal Rice(Oryza SativaL.)

Abstract

Rice is a self pollinated, short day plant belonging to the family Gramineae and it is the cereal crop with the second highest worldwide production. Rice is the dominant staple food for more than half of the world's population [16]. Primarily, it is grown in more than 100 countries of Asia. But the productivity of rice is low in India as compared to other asian countries. Declining land productivity with negative nutrient balance is the main concerns against the food security problems in the country. Fertilization is one of the most important notable measures that help to increase agricultural production. So, application of adequate amount of mineral nutrients like N, Zn and Fe to crop is one of the important factors in achieving higher productivity. Modern rice varieties obviously require higher amount of nutrients to give higher crop yields. So, it is necessary for improving the efficiency of applied fertilizers, which depends on adequate availability of most essential plant nutrients in a balanced proportion throughout the crop growth period. In recent year's use of fertilizers coupled with intensive cropping have accelerated the exhaustion of micronutrient reserves of soils. It has, thus, become imperative to use the matching doses of required NPK and micronutrients. Nutrient deficiency is another one of the important yield limiting factors includes delayed sowing, intensive cultivation and imbalance and non-judicious fertilizers use. Nitrogen fertilization plays a great role in increasing rice production. Nitrogen is one of the most mobile plant nutrients in the soil. Management of nitrogen is essential for aerobic culture of rice because nitrogen use efficiency (NUE) should be in the range of 40-60 per cent. Application of nitrogen at right time is perhaps the simplest agronomic solution for improving the nitrogen use efficiency. Zn is also known to have an important role either as a metal component of enzymes or as a functional, structural or regulatory co-factor of a large number of enzymes [6]. Major factors which influence the zinc content in soil are pH, carbonate content, organic matter, soil texture and interaction between zinc and other microelements, such as iron. Zinc is important to membrane integrity and phytochrome activities [13]. Zinc is essential for the normal healthy growth and reproduction of plants and plays a key role as a structural constituent or regulatory co-factor of enzymes in many biochemical pathways. Less mobile nutrients (e.g. iron and zinc) low availability in new leaf tissues and shoot tips causing deficiency symptoms visible in the terminal younger part of the canopy. Iron is also one of the most essential elements but it's use is low and also due to it's less mobility for plant. Among all the micronutrients, plants need iron more than other. Among micronutrients, Iron (Fe) is a cofactor for approximately 140 enzymes that catalyze unique biochemical reactions. Foliar fertilization, which has been developed in the last 60 years, does not totally replace soil fertilization on...

Crop Establishment Methods and Zinc Fertilization Affects Nutrients Content and Their Uptake of Direct-Seeded Rice

“…With respect to Zn fertilization treatments, 6 kg Zn ha -1 (basal application) followed by 6 kg Zn ha -1 (foliar application) observed higher N uptake by grain, straw and both of DSR might be due to higher dry matter accumulation. Our results are in conformity with the research finding of Kumar et al, (2016).…”

“…However, higher Zn content observed with the foliar application was probably due to more retention of Zn in the plant system. Our results confirm the research findings of Kumar et al, (2016); Ghoneim (2016); Kumar et al, (2017) and Farooq et al, (2018).…”

“…However, the lower P uptake was recorded with control treatment. Our results are in agreement with the research finding of Kumar et al, (2016). In case of K uptake conventional till-wet direct seeded rice followed by conventional till-direct seeded rice and zero till-direct seeded rice, respectively were proved superior might be due to the difference in dry matter accumulation.…”

“…However, the lower K uptake was recorded with control treatment. Our results are in analogues with the research finding of Kumar et al, (2016).…”

Green Synthesis of Zinc Oxide Nanoparticles: Fortification for Rice Grain Yield and Nutrients Uptake Enhancement

“…However, the increase was 18.2 and 13.3%, respectively, in both seasons under ZnSO 4 + ZnONP 60 treatment in straw yield rather than ZnSO 4 . This increase may be due to synergetic relationships among Zn and K, which causes more available and increase in K efflux from the root and shoot to translocate it to sink parts [ 50 ]. Generally, N, K, and Zn uptake in both grain and straw yields are markedly increased with Zn sufficiency.…”