Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810101374
Authors: JANARDHAN, SAGINA
Advisor: USHA RANI, I
Title: RESPONSE OF DIRECT SOWN RICE TO ZINC AND IRON NUTRITION
Publisher: Acharya N.G. Ranga Agricultural University
Language: en_US
Type: Thesis
Pages: 161
Agrotags: null
Keywords: DIRECT SOWN, RICE, ZINC, IRON NUTRITION
Abstract: A field experiment entitled “Response of direct sown rice to zinc and iron nutrition” was conducted at the Agricultural College Farm, Bapatla, during kharif, 2017. The experimental soil was neutral in reaction, non-saline, low in organic carbon, low in available N, medium in available P2O5, medium in available K2O and sufficient in all available divalent cationic micro nutrients (Zn, Fe, Mn and Cu). The experiment was laid out in randomized block design (RBD) with seven treatments replicated thrice. The treatments consisted of T1- RDF (180 : 60 : 40 N-P2O5-K2O (kg ha-1); T2- RDF + ZnSO4 @ 50kg ha-1 through soil application; T3- RDF + FeSO4 @ 25kg ha-1 through soil application; T4 - RDF + ZnSO4 @ 50 kg ha-1 + FeSO4 @ 25 kg ha-1 through soil application; T5- RDF + foliar spray of ZnSO4 @ 0.2% at 20 and 45 DAS; T6- RDF + foliar spray of FeSO4 @ 0.5% at 20 and 45 DAS; T7- RDF + foliar spray of ZnSO4 @ 0.2% and FeSO4 @ 0.5% at 20 and 45 DAS. Recommended dose of nitrogen, phosphorus and potassium were applied to all the plots in the form of urea, single super phosphate and muriate of potash, respectively. Entire quantity of phosphorus was applied to all the treatment plots as basal before sowing of crop. Zinc and iron were applied as respective sub plots @ 50 and 25 kg ha-1, respectively, as per the treatments as basal application before sowing i.e., 48 hours after application of P fertilizer. Foliar spray of ZnSO4 @ 0.2% and FeSO4 @ 0.5% twice at 20 and 45 DAS was given as per the treatments. At panicle initiation stage second split application of nitrogen and potassium was applied. The influence of various treatments on yield attributes, yield, nutrient content and uptake and soil properties (physico-chemical properties and available soil nutrients) were determined by standard procedures at different stages. Data collected on growth parameters viz., plant height, number of tillers m-2, dry matter production of direct seeded rice revealed that all the growth parameters were significantly higher with RDF + ZnSO4 @ 50 kg ha-1+ FeSO4 @ 25 kg ha-1 through soil application (T4) which was comparable with T7 treatment (RDF + foliar spray of ZnSO4 @ 0.2% and FeSO4 @ 0.5% at 20 and 45 DAS), The T4 treatment was significantly superior to the rest of the treatments but on par with T7. RDF applied without Zn and Fe, recorded the lowest growth parameters. There was a significant improvement in the yield attributes like number of grains per panicle, grain and straw yield of direct sown rice with application of RDF + ZnSO4 @ 50 kg ha-1+ FeSO4 @ 25 kg ha-1 through soil application (T4) and it was on a par with the treatment T7. The nutrient content (N, P, K, Mn and Cu) of direct sown rice at tillering, panicle initiation and harvest was not significantly influenced by the treatments and zinc and iron contents were significantly influenced by the treatment that received RDF + ZnSO4 @ 50 kg ha-1+ FeSO4 @ 25 kg ha-1 through soil application (T4) and it was on par with T7. Lower values of all the nutrients were recorded with RDF (T1). Uptake of nutrients at tillering, panicle initiation and at harvest was markedly influenced by the treatment received RDF + ZnSO4 @ 50 kg ha-1+ FeSO4 @ 25 kg ha-1 through soil application (T4) and it was on par with T7. While, lower values were recorded with RDF (T1). The soil properties viz., pH, EC and organic carbon were not significantly influenced by the imposed treatments, There was not significant influence of the treatments on available nitrogen, phosphorus and potassium. Among the micronutrients the treatmental influence was significant on Zn and Fe, while Mn and Cu were not significant by influenced. The available zinc and iron content was markedly influenced by zinc and iron fertilization along with recommended dose of fertilizers at all the crop growth stages. Overall, the study indicated that application of zinc and iron along with recommended dose of fertilizer proved significantly superior in plant growth parameters, yield attributes, yield, plant nutrient content, uptake and soil available zinc and iron status in direct sown rice.
Description: D5663
Subject: Soil Science and Agriculture Chemistry
Theme: RESPONSE OF DIRECT SOWN RICE TO ZINC AND IRON NUTRITION
Research Problem: RESPONSE OF DIRECT SOWN RICE TO ZINC AND IRON NUTRITION
These Type: M.Sc
Issue Date: 2018
Appears in Collections:Thesis

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