Impact of rice (O. sativa L.) straw incorporation induced changes in soil physical and chemical properties on yield, water and nitrogen–balance and –use efficiency of wheat (T. aestivum L.) in rice–wheat cropping system: Field and simulation studies

2021 ◽  
Vol 194 ◽  
pp. 103279
Author(s):  
B.B. Vashisht ◽  
S.K. Jalota ◽  
P. Ramteke ◽  
Ramandeep Kaur ◽  
D.K. Jayeswal
Keyword(s):  
Nitrogen Balance ◽  
Chemical Properties ◽  
Cropping System ◽  
Physical And Chemical Properties ◽  
Simulation Studies ◽  
Use Efficiency ◽  
Straw Incorporation ◽  
Induced Changes ◽  
Physical And Chemical ◽  
And Chemical Properties

scholarly journals Effect of zinc nutrition on yield of rice-wheat cropping system and soil properties

2021 ◽  
Vol 8 (01) ◽  
Author(s):  
PEPAKAYALA VARALAKSHMI ◽  
POLAGANI NAGARJUNA ◽  
MOHAN BABU Y. N. ◽  
ADI LAKSHMI G. ◽  
ARADHNA KUMARI ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Aggregate Stability ◽  
Cropping System ◽  
Wheat Crop ◽  
Organic Carbon Content ◽  
Physical And Chemical Properties ◽  
Application Rates ◽  
Physical And Chemical ◽  
Zinc Application ◽  
And Chemical Properties

A study was conducted in an ongoing experiment under AICRP on micronutrients at nursery jhilli of RPCAU, research farm. The experiment consisted of thirteen treatments, of which twelve combinations were of four doses of zinc (Zn) (2.5, 5.0, 7.5 and 10 kg ha-1), three frequencies (only once, alternate year and every year) of application along with control with the no-zinc application. Rice and wheat crops were grown in succession with the recommended dosages of fertiliser viz. 120:60:40 of N: P2O5: K2O applied as Urea, DAP, and Potash, respectively. Surface soil samples (0-15 cm) were collected after the harvest of the wheat crop in the year 2018, i.e. after completion of six years of the experiment, and analysed for soil physical and chemical properties. The availability of nitrogen, sulphur, organic carbon content and aggregate stability increased, and the bulk density, phosphorous availability decreased with increasing doses and zinc application rates. No effect on soil availability of potassium, pH and EC. The treatment T7 i.e., application of zinc @ 7.5 kg Zn ha-1 in alternate year application was the best treatment with regards to yield of rice-wheat cropping (982.9 q ha-1) and also for good physical and chemical properties of the soil.

scholarly journals Subirrigation of Container-Grown Tomato II: Physical and Chemical Properties of the Growing Medium

Water ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 2211 ◽  
Author(s):  
Juana Cruz García-Santiago ◽  
Luis Alonso Valdez-Aguilar ◽  
Donita L. Cartmill ◽  
Andrew D. Cartmill ◽  
Porfirio Juárez-López ◽  
...  
Keyword(s):  
Nutrient Solution ◽  
Irrigation System ◽  
Nutrient Use Efficiency ◽  
Chemical Properties ◽  
Solution Concentration ◽  
Physical And Chemical Properties ◽  
Promising Strategy ◽  
Use Efficiency ◽  
Physical And Chemical ◽  
And Chemical Properties

Subirrigation of containerized vegetable crops is a promising strategy to increase water and nutrient use efficiency, however, the longer growing seasons for cultivation of vegetable species may cause marked changes in the physical and chemical substrate properties. This study determined the effects of the irrigation system, subirrigation vs. drip-irrigation, and the concentration of the nutrient solution on the substrate physical and chemical properties in containerized tomato plants. Plants were irrigated with solutions at concentrations of −0.072, −0.058 and −0.043 MPa. Root dry weight of subirrigated plants was decreased by 35% in the substrate top layer when the highest concentration was used. Substrate electrical conductivity increased while pH was acidified as solution concentration increased and from the bottom to the top substrate layers in subirrigated plants. Salts buildup was associated with increased concentration of oxalic and tartaric acids and pH acidification. The improved substrate physical and chemical properties in subirrigated plants were associated with higher fruit yield (11.0 kg per plant) provided nutrient solution concentration was reduced to −0.043 MPa; in contrast, the highest yield in drip-irrigated plants (10.1 kg per plant) was obtained when the solution concentration was −0.072 MPa. In conclusion, subirrigation with reuse of the nutrient solution is a promising strategy to reduce water waste through runoff and leaching as water use efficiency increases due to greater water retention properties in the substrate, the maintenance of an EC within a range the plants can tolerate, and a lower acidification of substrate pH.

Effects of Tillage Practices on Productivity of Wheat under the Indo-Gangetic

2017 ◽  
Vol 4 (03) ◽  
Author(s):  
SUBASH CHAND ◽  
A. K. Singh ◽  
Rakesh Kumar
Keyword(s):  
Field Experiment ◽  
Soil Health ◽  
Chemical Properties ◽  
Uttar Pradesh ◽  
Cropping System ◽  
Physical And Chemical Properties ◽  
Gangetic Plains ◽  
Tillage Practices ◽  
Physical And Chemical ◽  
And Chemical Properties

Field experiment was conducted for two consecutive years at the research farm of Baba Raghav Das Post Graduate College, Deoria, Uttar Pradesh, India to evaluate the effect of different tillage practices on soil health andcrop productivity of wheat under the rice-wheat cropping system of Indo-Gangetic Plains of India under the irrigated ecosystem.Results revealed thattreatment T3 produced significantly higheryield attributes in terms of number of ear bearing shoots (407)as compared to T4(390). However, it was also recorded that the grain weight per spike and test weight were significantly lower in T3 and T4over rest of the practices. The similar trends were followed in case of grain yield under the T3 (45.60) being on a par with T4 (45.50 but it was recorded significantly superior over rest of the tillage practices. With respect to the soil physical and chemical properties, it was also noticed significantly higher under the treatment T4 as compared to other treatment.

60 Co-γ radiation-induced changes in the physical and chemical properties of rapeseed straw

2016 ◽  
Vol 85 ◽  
pp. 207-214 ◽  
Author(s):  
ChunYan Zhang ◽  
XiaoJun Su ◽  
XingYao Xiong ◽  
QiuLong Hu ◽  
Samuel Amartey ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Γ Radiation ◽  
Rapeseed Straw ◽  
Radiation Induced ◽  
Induced Changes ◽  
Physical And Chemical ◽  
And Chemical Properties

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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