scholarly journals Effect of Maize + Pigeonpea Intercropping System on Yield, Equivalent Yield of Maize and Economics under Delayed Onset of Monsoon in Northern Transition Zone of Karnataka, India

2020 ◽  
Vol 9 (4) ◽  
pp. 867-876
Author(s):  
Shivakumar M. Malakannavar ◽  
M. P. Potdar ◽  
C. P. Chandrashekara ◽  
V. B. Kuligod
Keyword(s):  
Transition Zone ◽  
Delayed Onset ◽  
Equivalent Yield ◽  
Onset Of Monsoon

scholarly journals Effect of date of sowing and rainfall on sustainability of yield and rainwater use efficiency in cereal crops under arid alfisols

2021 ◽  
Vol 21 (2) ◽  
pp. 203-209
Author(s):  
B.SAHADEVA REDDY ◽  
B.RAVINDRANATHA REDDY ◽  
C.RADHA KUMARI ◽  
G.R.MARUTHI SANKAR ◽  
Y.ASHOKA REDDY ◽  
...  
Keyword(s):  
Pearl Millet ◽  
Foxtail Millet ◽  
Maximum Yield ◽  
Seasonal Rainfall ◽  
Cereal Crops ◽  
Growing Period ◽  
Use Efficiency ◽  
Equivalent Yield ◽  
Onset Of Monsoon ◽  
Made In

An assessment of the effects of date of sowing and crop seasonal rainfall on the sustainability of yield and rainwater use efficiency (RWUE) of sorghum, pearl millet and foxtail millet sown on five dates at 15 days interval from first fortnight of June to first fortnight of August during 2009 to 2014 under arid Alfisols at Anantapur has been made in this paper. A suitable date of sowing has been identified for each crop based on the relationships sorghum equivalent yield with crop seasonal rainfall and crop growing period observed in the 6-year study. The yield was significantly influenced by the variation in the crop seasonal rainfall and crop growing period when sown on different dates of sowing. It was significantly higher when crops were sown with the onset of monsoon in the first fortnight of June, and decreased with the subsequent sowings. Among crops, sorghum attained maximum mean yield of 923 kg ha-1 with RWUE of 2.73 kg ha-1 mm-1; while pearl millet attained mean yield of 873 kg ha-1 with RWUE of 2.95 kg ha-1 mm-1 and foxtail millet attained mean yield of 646 kg ha-1 with RWUE of 1.64 kg ha-1 mm-1 when sown during first fortnight of June. Based on the ranks assigned to the yield attained on different dates of sowing in different years, pearl millet was superior for sustaining maximum yield and RWUE comparedto sorghum and foxtail millet under arid Alfisols at Anantapur.

Theoretical modeling of the regular olivine intergrowths in the mimetic paramorphosis after ringwoodite and wadsleyite

2018 ◽  
pp. 3-12
Author(s):  
B. B. Shkursky
Keyword(s):  
Transition Zone ◽  
Theoretical Modeling ◽  
Mantle Transition Zone ◽  
Misorientation Angles

Theoretical modeling of regular olivine grains misorientations in mimetic paramorphoses after ringwoodite and wadsleyite, the formation of which during the ascension of matter from the Mantle Transition Zone is expected, has been carried out. The coordinates of the misorientation axes and the misorientation angles, characterizing 10 operations of alignment in the pair intergrowths of olivine grains, eight of which are twins, are calculated. Possible conditions for the formation of mimetic paramorphoses predicted here, and the chances of their persistence are discussed. The calculated orientations are compared with the known twinning laws of olivine.

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