scholarly journals Effect of Organic and Inorganic Sources of Nutrients on Secondary and Micro Nutrient Uptake by Rice at various Growth Periods

2018 ◽  
Author(s):  
Jayalakshmi Mitnala

A field experiment was conducted for two consecutive years (2011-2012 and 2012-2013) on fine texture soils of Agricultural College Farm, Bapatla to find out the effect of different sources of nutrients on secondary (Ca and Mg) and micro nutrient (Fe, Mn, Cu and Zn) uptake by rice at various growth periods. The experiment was laid out in a randomized block design in kharif season with four treatments and replicated five times. The treatments consisted of M1 (RDF- Control), M2 (10t FYM ha-1 + RDF), M3 (1.5t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). The nutrient content in rice at various growth periods was significantly increased with the application of 100% NPK in combination with FYM @ 10t ha-1. However, it was on par with that of green manuring together with 100% NPK during both the years of the study.

2019 ◽  
Vol 56 (3) ◽  
pp. 312-317
Author(s):  
Mohana Rao Puli ◽  
PRK Prasad ◽  
P Ravindra Babu ◽  
KL Narasimha Rao ◽  
G Subbaiah

A field experiment was conducted on fine texture soils to find out the effect of different sources of nutrients on secondary (Ca and Mg) and micro nutrient (Fe, Mn, Cu and Zn) content in rice at various growth periods. The experiment was laid out in a randomized block design in kharif season with four treatments and replicated five times. The treatments consisted of M1 (RDF - Control), M2 (10 t FYM ha-1 + RDF), M3 (1.5 t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). The nutrient content in rice at various growth periods was significantly increased with the application of 100 % NPK in combination with FYM @ 10 t ha-1. However, it was on par with that of green manuring together with 100 % NPK during both the years of the study.


2018 ◽  
Author(s):  
Jayalakshmi Mitnala

A field experiment was conducted for two consecutive years (2011-2012 and 2012-2013) as doctoral research on fine texture soils of Agricultural College Farm, Bapatla to find out the effect of different sources of nutrients on NPK uptake by rice at various growth periods. The experiment was laid out in a randomized block design in kharif season with four treatments and replicated five times. The treatments consisted of M1 (RDF - Control), M2 (10t FYM ha-1 + RDF), M3 (1.5t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). The NPK uptake by rice at various growth periods was significantly increased with the application of 100% NPK in combination with FYM @ 10t ha-1. However, it was on par with that of green manuring together with 100% NPK during both the years of the study.


Author(s):  
Mohana Rao Puli ◽  
P. R. K. Prasad ◽  
P. Ravindra Babu ◽  
K. L. Narasimha Rao ◽  
G. Subbaiah

A field experiment was conducted for two consecutive years (2011-2012 and 2012-2013) on fine texture soils of Agricultural college farm, Bapatla. The experiment was laid out in a randomized block design in kharif season with four treatments. The treatments consisted of M1 (RDF (Recommended dose of fertilizers) - Control), M2 (10t FYM (Farm Yard Manure) ha-1 + RDF), M3 (1.5t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). During the immediate rabi, the experiment was laid out in a split-plot design without disturbing the soil for succeeding maize with the four treatments given to kharif rice as main plot treatments and each of these divided into five sub-plots to receive five levels of fertilizer NPK application viz., N1 - 75% NPK, N2 - 100% NPK, N3 - 125% NPK, N4 - 150% NPK and N5 - 175% NPK for succeeding maize. Data collected on available NPK after harvest of maize crop were significantly increased with the application of 100% NPK in combination with FYM @10t ha-1 to preceding rice crop, irrespective of the NPK levels applied to succeeding maize crop. However, it was on par with that of green manuring together with 100% NPK during both the years of the study.


2018 ◽  
Author(s):  
Jayalakshmi Mitnala

An experiment was conducted for two consecutive years (2011-2012 and 2012-2013) on fine texture soils of Agricultural college farm, Bapatla. The experiment was laid out in a randomized block design in wet season with four treatments and five replications. The treatments consisted of M1 (recommended dose of fertilizers (RDF) - Control), M2 (10t farmyard yard manure (FYM) ha-1 + RDF), M3 (1.5t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). Data collected on biometric observations (plant height, number of tillers, dry matter accumulation) and yield. The yield of crop was significantly increased with the application of 100%NPK in combination with FYM @10t ha-1. However, it was at par with green manuring along with the application of 100% RDF (NPK).Thus, green manure in situ with Dhaincha may be used as an alternative organic source of nutrients to the FYM.


2019 ◽  
Vol 32 ◽  
pp. 373-388
Author(s):  
Ali A. Alwan

A field experiment was conducted in the experiment field of Agricultural College, Basrah University, to study the effect of three types of moldboards i.e. helical, general purpose and digger moldboard, three tillage depths (15, 20 and 25 cm) and three forward speeds (4.37, 6.11 and 7.03 km h-1) on the draft force (DF), soil pulverization index (SPI), the specific energy (SE), the energy equivalent (EQE), and soil pulverization efficiency (SPE). Split-split plot with complete randomized block design with three replications were used in this study, and Least significant differences (LSD) was used to compare the means of treatments at 0.05 levels. The results showed there was a significant effect for moldboard types, plowing depths, plowing speeds and the interaction on all studied parameters. Whereas the digger moldboard type achieved the lower values of DF and SPI compared with the general purpose and helical moldboard types by percentage of 12.13 and 19.49% respectively and 16.37 and 50.61% respectively. However, the digger moldboard gave the highest value of SPE of 80%. The results Also, indicated to that the plowing depth and plowing speed had a significant effect on studied parameters when increasing the plowing depth by percentage 67% the DF and SPI increased by 137.27% and 30.46%, while the SE, the EQE and SPE reduced by 18.19, 17.80 and 2.70 % respectively. However, increasing the plowing speed by a percentage of 61%, the DF, SE, EQE, and SPE increased by 25.98, 45.11, 8.18 and 35.59% respectively, while the SPI decreased by 29.15%. 


Author(s):  
Rahul Kumar ◽  
Sweeti Kumari ◽  
Shweta Shambhabhi ◽  
Rashmi Priyadarshi ◽  
Shabana .

The present study “Relative changes in Boron fractions in black gram rhizosphere” was contemplated with two objectives: 1) To find out the suitable source, dose and method of boron for black gram and 2) To study the changes in relative boron fractionation under black gram rhizosphere. To achieve the present objectives a field experiment was conducted with Greek gram var. IPU2-43 in factorial randomized block design with three sources, four doses and two methods of application of boron replicated thrice at Bihar Agricultural College Farm of BAU, Sabour during the year 2018-19. Three sources were: S1: Borax, S2: Solubor and S3: Boric acid; Doses: D1: 0.5 kg ha-1, D2: 1.0 kg ha-1, D3: 1.5 kg ha-1, D4: 2.0 kg ha-1and methods: Soil and foliar application. Based on the findings of field experiment it can be concluded that the application of 1.5 kg B ha-1 (D3) registered maximum seed yield of (8.27 q ha-1), straw yield of (10.04 q ha-1), nutrient uptake by grain (12.64 g ha-1) and nutrient uptake by straw (16.95 g ha-1) which was statistically at par with the application of 2.0 kg B ha-1 (D4) and was found to be statistically superior over rest of the doses. Among the sources, the maximum seed yield (7.96 q ha-1), straw yield (9.53 qha-1), nutrient uptake by grain (12.42 gha-1) and nutrient uptake by straw (16.36 gha-1)was found to be highest under the plots receiving 1.5 kg B ha-1 through foliar application of Solubor (S2) and the lowest grain yield (7.88 qha-1), straw yield (9.36 q ha-1),nutrient uptake by grain (11.85 gha-1) and nutrient uptake by straw (15.60 gha-1)was recorded from 0.5 kg B ha-1(D1) which was found statistical inferior over rest of the boron doses. Foliar application resulted in a better yield of straw as compared to soil application.


2017 ◽  
Vol 51 (06) ◽  
Author(s):  
Y. M. Swathi ◽  
M. Srinivasa Reddy ◽  
G. Prabhakara Reddy ◽  
P. Kavitha

A field experiment was conducted during late kharif season of the year 2016-17 at Agricultural College Farm, Mahanandi (Andhra Pradesh) to study the effect of density, planting patterns and mulching on yield, yield parameters of pigeonpea under drip irrigation. The study was laid out in randomized block design with nine treatments and three replications. The yield attributes viz., pods branch-1, pods plant-1, seeds pod-1 pod yield plant-1, hundred seed weight and seed yield were maximum with 120/60 cm × 20 cm as paired rows with plastic mulch in pairs. Higher stalk yield was noticed with spacing of 180/60 cm × 20 cm as paired rows with plastic mulch in pairs. Number of seeds pod-1 and hundred seed weight and harvest index of pigeonpea did not differ significantly among the treatments.


2020 ◽  
Vol 57 (2) ◽  
pp. 139-145
Author(s):  
D Mounika ◽  
G Kishore Babu ◽  
M Martin Luther

A field experiment was conducted at the Agricultural College farm, Bapatla, during kharif and rabi 2017-18 and 2018-19. The experiment was conducted with variety BPT-5204 in a randomized block design with ten treatments and three replications. The maximum Number of panicles m-2, total filled grains panicle-1, test weight, grain yield, straw yield, harvest Index and return per rupee investment were recorded with soil test based fertilizer recommendation with 10 t ha-1 FYM application which was at par with soil test based fertilizer recommendation alone and 7.5 t ha-1 targeted yield recommendation along with FYM (T5 and T10) and RDF with FYM (T6). Grain yield of rice was significantly higher with soil test based fertilizer recommendation with 10 t ha-1 FYM application which was statistically at par with soil test based fertilizer recommendation alone (T2) and 7.5 t ha-1 targeted yield fertilizer recommendation with FYM (T10) compared to the rest of the treatments.


2018 ◽  
Author(s):  
Jayalakshmi Mitnala

(2011-2012 and 2012-2013) on fine texture soils of Agricultural college farm, Bapatla. The experiment was laid out in a randomized block design in kharif seasonwith four treatments. The treatments consisted of M1 (RDF - Control), M2 (10t FYM ha-1 + RDF), M3 (1.5t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). During the immediate rabi, the experiment was laid out in a split-plot design without disturbing the soil for succeeding maize with the four treatments given to kharif rice as main plot treatments and each of these divided into five sub-plots to receive five levels of fertilizer NPK application viz., N1 - 75%NPK, N2 - 100% NPK, N3 - 125% NPK, N4 - 150% NPK and N5 - 175% NPK for succeeding maize. Data collected on soil physico-chemical properties after harvest of maize crop were relatively improved with the application of 100%NPK in combination with FYM @10t ha-1 to preceding rice crop, irrespective of the NPK levels applied to succeeding maize crop. However, it was on par with that of green manuring together with 100% NPK during both the years of the study.


2020 ◽  
Vol 15 (2) ◽  
pp. 86-90
Author(s):  
Mohana Rao Puli ◽  
P.R.K. Prasad

A Doctoral Research was conducted for two consecutive years (2011-2012 and 2012-2013) on fine texture soils of agricultural college farm, Bapatla to find out the residual effect of different sources of nutrients applied to preceding rice on P content in maize at different growth stages. The experiment was laidout in a Randomized Block Design in Kharif season with four treatments. The treatments consisted of M1 (RDF - Control), M2 (10t FYM ha-1 + RDF), M3 (1.5t vermicompost ha-1 + RDF), M4 (Green manuring + RDF). During the immediate Rabi, the experiment was laid out in a split-plot design without disturbing the soil for succeeding maize with the four treatments given to Kharif rice as main plot treatments and each of these divided into five sub-plots to receive five levels of fertilizer NPK application viz., N1 - 75%NPK, N2 - 100% NPK, N3 - 125% NPK, N4 - 150% NPK and N5 - 175% NPK for succeeding maize. Data collected on P content in maize at different growth stages was significantly increased with the application of 100% NPK in combination with FYM @10t ha-1 to preceding rice crop, irrespective of the NPK levels applied to succeeding maize crop. However, it was on par with that of green manuring together with 100% NPK during both the years of the study.


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