2020
DOI: 10.32473/edis-ag443-2020
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Questions and Answers for Using Sunn Hemp (Crotalaria juncea L.) as a Green Manure Cover Crop

Abstract: This document synthesizes information about the warm season cover crop sunn hemp. The question-and-answer format addresses frequently asked questions for growers with answers that summarize the growing body of sunn hemp research. The information is provided so that growers in Florida can learn about up-to-date cultivation and management options for sunn hemp as well as better understand its practical uses. This document is a follow-up to the following: Wang, Qingren, Yuncong Li, Waldemar Klassen, and Edw… Show more

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Cited by 3 publications
(5 citation statements)
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“…Previous research has found that sunn hemp can accumulate 4.5 Mg ha −1 of biomass and fix 120 kg ha −1 of N in as little as 60 d (Blanco-Canqui et al, 2012;Cherr et al, 2006;Joy & Peterson, 2005;. These studies were done in the southern half of the United States where the climate is warmer and sunn hemp can be grown as a late-summer cover crop, sunn hemp is recommended to be grown in USDA hardiness Zones 8-13 (Fall et al, 2020). Research is limited on the performance of sunn hemp in northern regions where it will be grown as a summer crop.…”
Section: Crop Sciencementioning
confidence: 99%
“…Previous research has found that sunn hemp can accumulate 4.5 Mg ha −1 of biomass and fix 120 kg ha −1 of N in as little as 60 d (Blanco-Canqui et al, 2012;Cherr et al, 2006;Joy & Peterson, 2005;. These studies were done in the southern half of the United States where the climate is warmer and sunn hemp can be grown as a late-summer cover crop, sunn hemp is recommended to be grown in USDA hardiness Zones 8-13 (Fall et al, 2020). Research is limited on the performance of sunn hemp in northern regions where it will be grown as a summer crop.…”
Section: Crop Sciencementioning
confidence: 99%
“…Кроталярию можно выращивать и как монокультуру, и в бобово-злаковой смеси (22), например вместе с просом (Pennisetum glaucum (L.) R.Br. ), кукурузой (Zea mays L.) или сорго/суданской травой (Sorghum ½ drummondii (Nees ex Steud.)…”
Section: рис 2 географическое распространение культуры Crotalaria Jun...unclassified
“…Отчеты о норме применения минеральных удобрений различаются. После прорастания можно вносить удобрения из расчета 30 кг/га в пересчете на N и 40 мг/кг в пересчете на K2O (22,36). Фосфор в виде P2O5 рекомендуют вносить в дозе 20 кг/кг.…”
Section: рис 2 географическое распространение культуры Crotalaria Jun...unclassified
“…Current prices may range from $1.10-$1.50/lb, compared with historical prices near $2/lb. Even with relatively lower prices, total seeding costs can still be high because recommended seeding rates in Florida range from 10-50 lb/acre (Wang et al 2019;Fall et al 2020). Higher seeding rates are needed for broadcast applications, particularly when quick, consistent ground cover or high biomass is desired for weed suppression or forage production.…”
Section: History and Production Considerationsmentioning
confidence: 99%
“…Whereas overall biomass production may be greater with short-day cultivars, day-neutral cultivars may fit better in cooler or shorter growing windows or when excessive height is not desired. Detailed information on sunn hemp production practices in Florida can be obtained from the UF/IFAS EDIS SS-AGR-444 (Fall et al 2020) and SL 306 (Wang et al 2019).…”
Section: History and Production Considerationsmentioning
confidence: 99%