Papers by Dr. P.Gurumurthy
International Journal of Environment and Climate Change
A field experiment was conducted during rabi 2022 at Block D of the College Farm, Agriculture Col... more A field experiment was conducted during rabi 2022 at Block D of the College Farm, Agriculture College, Naira. The experiment was laid out in Split-plot design with three main plots.M1:100% RDF (180-60-60 NPK Kg ha-1) + FYM @10 t ha-1, M2:75% RDF (135-45-45 NPK Kg ha-1) + FYM @10 t ha-1. M3:0% RDF- Control and four sub-plotsS1: Liquid [email protected] L ha-1 each at knee high stage, S2: Vermiwash spraying twice @5% at knee high and tasseling to silking stages, S3: Panchagavya spraying twice @3% at knee high and tasseling to silking stages andS4: Drava Jeevamrutham spraying twice @10% at knee high and tasseling to silking stages Results revealed that 100% RDF (180-60-60 NPK Kg ha-1) + FYM @10 t ha-1 (M1) recorded maximum fresh cob yield (16409 kg ha-1) and stover yield (17481 kg ha-1). Among the subplots: Liquid azospirllum+ PSB+ KRB+ [email protected] L ha-1 (S1) recorded maximum fresh cob yield (14091 kg ha-1) and stover yield (15623 kg ha-1). The interaction effect of differ...
AN ASIAN JOURNAL OF SOIL SCIENCE, Dec 15, 2018
A study was conducted to assess land capability and irrigability classification of soils under Th... more A study was conducted to assess land capability and irrigability classification of soils under Thotapalli major irrigation project of North Coastal Andhra Pradesh. Horizon wise soil samples from six representative soil pedons located at Devarapalli, Gujjangivalasa, Patikivalasa, Gangada, Aamiti and Maddivalasa villages were studied. The red and associated soils of upland soils were gently sloping while black soils were nearly level cultivated plains. In general the texture ranged from loamy sand to clay, moderately deep to deep, slight to moderate erosion, nil to slight flooding, good to poor drainage. In respect of fertility status the soils in general were low to medium in organic carbon, the CEC values ranged from 6.4 to 32.5 cmol (p+) kg-1 and base saturation was 23 to 88 per cent. Free calcium carbonate was found in pedons 3, 4 and 6. The ESP was low, EC was non saline (less than 4.0 dSm-1). The climate of study area was characterised by sub-humid with distinct wet and dry seasons. These soils fall under land capability classes of II, III and IV with distinct limitations. The land irrigability classes of these soils were identified as S1, S2 and S3 with distinct limitations.
International Journal of Current Microbiology and Applied Sciences, 2018
Indian Journal Of Agricultural Research, 2019
Assessment of macronutrient status of soils under five major cropping systems namely, rainfed man... more Assessment of macronutrient status of soils under five major cropping systems namely, rainfed mango/cashew orchards, rainfed groundnut/mesta cropping, irrigated rice followed by pulses, irrigated rice followed by maize and irrigated sugarcane in Thotapalli irrigation project ayacut area of north coastal Andhra Pradesh was carried out. A total of 125 random soil samples were collected from five different cropping systems from five villages of five Tehsils (mandals) namely, Cheeprupalli, Therlam (both tehsils from Vizianagarm district), Ranasthalam, Regidiamadalavalasa and Laveru (from Srikakulam district). The results of the study revealed that the soil organic carbon (OC), available nitrogen (N), phosphorus (P), potassium (K) and sulphur (S) contents of the irrigated land was higher than adjacent rainfed upland, however the exchangeable calcium and magnesium were higher in rainfed uplands and relatively lower in irrigated cropping systems. Significant positive correlation was notice...
AN ASIAN JOURNAL OF SOIL SCIENCE, Dec 15, 2018
Agropedology, 2019
Six representative pedons from Devarapalli (P1), Gujjangivalasa (P2), Patikivalasa (P3), Gangada ... more Six representative pedons from Devarapalli (P1), Gujjangivalasa (P2), Patikivalasa (P3), Gangada (P4), Aamiti (P5) and Maddivalasa (P6) villages belonging to ayacut of Thotapalli major irrigation project of North-Coastal Andhra Pradesh were studied. Pedons 1, 2 and 5 were developed from granite-gneiss, while pedons 3, 4 and 6 had their parent legacy with granite-gneiss mixed with calcareous murrum. The soils of P1 and P2 were moderately deep to very deep having argillic horizon while cambic sub-surface diagnostic horizon was noticed in P3, P4 and P5. Deep and wide surface cracks and slickensides close enough to intersect were observed in P4 and P6. The pedons P1, P2, P3 and P5 had sandy loam to sandy clay loam texure and it was clay loam to clay in cultivated plains (P4 and P6). The soils were low to medium in organic carbon content. The CEC ranged from 6.4 to 32.5 cmol (p+) kg-1 and the soil exchange complex was dominated by calcium followed by magnesium, sodium and potassium. The ...
Uploads
Papers by Dr. P.Gurumurthy