Soybean aphid infestation and crop yield in relation to cultivar, foliar insecticide, and insecticidal seed treatment in South Dakota

2021 ◽  
Author(s):  
Louis S. Hesler ◽  
Eric A. Beckendorf
2021 ◽  
Author(s):  
Carlos J. Esquivel ◽  
Luis A. Canas ◽  
Kelley Tilmon ◽  
Andy P. Michel
Keyword(s):  

PLoS ONE ◽  
2015 ◽  
Vol 10 (12) ◽  
pp. e0145660 ◽  
Author(s):  
Charles Kanobe ◽  
Michael T. McCarville ◽  
Matthew E. O’Neal ◽  
Gregory L. Tylka ◽  
Gustavo C. MacIntosh

2009 ◽  
Vol 34 (1) ◽  
Author(s):  
Karrie A. Koch ◽  
David W. Ragsdale

2012 ◽  
Vol 7 (1) ◽  
pp. 104-106
Author(s):  
V.M. Nikolskiy ◽  
L.N. Tolkacheva ◽  
Ya.M. Khalyapina ◽  
T.I. Smirnova ◽  
A.A. Yakovlev

In the laboratory and plot experiments the effect of ethylenediaminedisuccinic acid (EDDS) and iminodisuccinic acid (IDS) on chlorophyll content in wheat germ leaves and adult plants was investigated. It was estimated that both complexons increased chlorophyll content in leaves and crop yield.


2016 ◽  
Vol 41 (1) ◽  
pp. tsw072
Author(s):  
Bradley L. McManus ◽  
Billy W. Fuller ◽  
Larissa G. Giddings

2019 ◽  
Author(s):  
Shane Stiles ◽  
Jon Lundgren ◽  
Charles Fenster ◽  
Henning Nottebrock

ABSTRACTPrairies, once spanning the Upper Midwest, have now largely been replaced by agriculture. The lack of resources available to pollinators in agricultural fields and practices commonly employed has led to a decline in insect diversity. To enhance sustainable practices, we must better understand how ecosystem services such as pest control and pollination services provided by a diverse insect and pollinator community scale to current farming practices as related to crop yield and how landscape features may positively contribute to insect and pollinator diversity. We examined how landscape heterogeneity relates to insect and pollinator diversity, as well as how insect and pollinator diversity relates to crop yield across common farming practices. We planted 35 single acre sites of Brassica carinata, a generalist flower possibly capable of supporting a diverse insect community. We randomly assigned each site with a combination of three common farming practices: tilling (yes/no), added honey bee hives (yes/no), and treatment with systemic neonicotinoids (yes/no). Insect and pollinator diversity and the surrounding landscape at multiple spatial scales were calculated. We observed a significant positive relationship between insect (and pollinator) diversity with yield in the absence of any farming practice. All farming practices will increase yield. However, farming practices alter the relationship between yield and diversity. The addition of seed treatment or tillage negates the relationship between insect (and pollinator) diversity with yield. Seed treatment alone results in a flat relationship between diversity and yield for all insects and a negative relationship for pollinators. Increased landscape heterogeneity results in a positive relationship between insect diversity at the 1000 m scale and pollinator diversity at the 3000 m scale, suggesting large-scale heterogeneity contributes to overall insect diversity. Our results show that increasing large-scale landscape heterogeneity increases diversity serving as a substitute for common farming practices such as application of pesticides, tilling, or bee hives. Increased heterogeneity could save farmers from the input cost of treatment or tillage, by way of increased insect diversity, while still providing similar yields.


Author(s):  
А. Д. Гирка ◽  
І. О. Кулик ◽  
О. Г. Андрейченко

Представлені результати вивчення впливу застосування мікродобрив на урожайність вівса та ячменю ярого в північному Степу. Встановлено, щокомплексне застосування мікродобрив за обробки насіння та обприскування посівів забезпечує підвищення врожайності вівса на 10 %, ячменю – на 15 % залежно від попередника. Виявлено, що більш адаптованим до посушливих умов є овес: він забезпечив на 0,72 т/га (30,9 %) більшу врожайністьпорівняно з ячменем. Кращим попередником для згаданих культур є пшениця озима, вирощування після якої забезпечувало формування врожайностізерна вівса на 10,1 та 18,1 %, а ячменю – на 20,4 та 23,7 % більше, ніж після кукурудзи МВС та соняшника відповідно. The results of studying the influence of the use of fertilizers on crop yield of oats and spring barley in the Northern Steppe. It is established, that a complex application of micro seed treatment and spraying of crops provides increased productivity of oats by 10%, barley – 15% depending on the predecessor. Found that more adapted to arid conditions are oats that provided by 0.72 t per ha (30.9%) higher yield than barley. The best predecessor for these crops are winter wheat, cultivation after which ensured grain yield formation of oats by 10.1 and 18.1%, and barley – by 20.4 and 23.7% more than after maize for forage and sunflower respectively.


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