Abstract
IRRIGATION AND MULCHING MANAGEMENT FOR SWEET PEPPER CROP IN PROTECTED ENVIRONMENT Antonio Evaldo Klar1; Sidnei Osmar Jadoski21Rural Engineering Department, Agronomic Science College,Paulista State University , Botucatu-SP (Brazil), klar@fca.unesp.br2Agricultural and Veterinarian Sciences Center, Guarapuava – PR. 1 ABSTRACT This study was developed over the 1999-2000 agricultural years at the Rural Engineering Department of School of Agronomical Sciences, UNESP, Botucatu, SP, under protected environment. The objective was to evaluate the influence of irrigation and black polyethylene mulch management on the water use and fruit production of sweet pepper crop (Capsicum annuum L., Elisa Hybrid) 230 days after seedling transplant (DAST). The study was divided into two experiments: 1) application of the irrigation at -50 and -1500 kPa minimum soil water potentials with and without mulching on the soil, from 29 to 168 DAST. A randomized experimental design was used with six replications; and 2) severe water deficit in the soil through irrigation suspension and mulching removal (169 to 230 DAST). Drip fertigation was used and soil water was monitored by tensiometers and neutron probe. It was verified that: - the severe drought stress caused leaf senescence and abscission and significantly affected the production and quality of sweet pepper fruits and the Water Use Efficiency (WUE); - the fruit yield and number were higher in the treatments with mulching, therefore polyethylene mulching showed to be an efficient technique to reduce irrigation number and water volume applied. This efficiency was reduced with soil water content decreases based on fruit yield. Pepper plants showed good osmotic adjustment and, consequently, tolerance to water stress. KEYWORDS: drought stress, polyethylene mulching, soil water potential KLAR, A. E.; JADOSKI, S. O. IRRIGAÇÃO E COBERTURA MORTA EM PLANTAS DE PIMENTÃO EM AMBIENTE PROTEGIDO 2 RESUMO O trabalho foi desenvolvido no ano agrícola 1999-2000, em casa de vegetação, no Departamento de Engenharia Rural da Faculdade de Ciências Agronômicas - UNESP, campus de Botucatu, SP. O objetivo foi estudar o efeito de diferentes manejos da água de irrigação e de cobertura de polietileno preto na superfície do solo sobre o consumo de água e produção de frutos da cultura do pimentão (Capsicum annuum L, híbrido Elisa), por um período de 230 dias após o transplante das mudas (DAT). O trabalho foi composto por dois experimentos: I) aplicação dos manejos da irrigação a 50 kPa e 1500 kPa, com e sem a presença de cobertura de polietileno preto sobre a superfície do solo, para o período de 29 a 168 DAT. O delineamento experimental foi inteiramente casualizado com seis repetições, e II) aplicação de deficiência hídrica severa no solo, através da suspensão das irrigações e retirada da cobertura de polietileno do solo, no período de 169 a 230 DAT. Concluiu-se que a deficiência hídrica afeta a qualidade e a produção dos frutos do pimentão. A utilização de cobertura de polietileno sobre o solo é técnica eficiente para reduzir a necessidade de irrigações e o volume de água a ser aplicado aos cultivos e sua eficiência é reduzida na medida em que diminui o conteúdo de água do solo. Houve significativa influencia no ajuste osmótico pela aplicação dos estresses hídricos nos tratamentos em que o potencial mínimo de água no solo atingiu 1500 kPa. UNITERMOS: deficiência hídrica, potencial de água do solo, polietileno preto
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Claims 7
Claim · model-written summary
Severe drought caused leaf senescence and abscission.
- Taxon
- sweet pepper crop
Capsicum annuumt0 - Treatment
- severe drought stresse0
- Outcome
- leaf senescence and abscissione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the severe drought stress caused leaf senescence and abscission”
t0“SWEET PEPPER CROP”
Claim · model-written summary
Severe drought significantly affected fruit production and quality.
- Taxon
- sweet pepper
Capsicum annuume0 - Treatment
- severe drought stresse0
- Outcome
- production and quality of sweet pepper fruitse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the severe drought stress caused leaf senescence and abscission and significantly affected the production and quality of sweet pepper fruits”
Claim · model-written summary
Severe drought significantly affected water use efficiency.
- Taxon
- sweet pepper
Capsicum annuume0 - Treatment
- severe drought stresse0
- Outcome
- Water Use Efficiency (WUE)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the severe drought stress caused leaf senescence and abscission and significantly affected the production and quality of sweet pepper fruits and the Water Use Efficiency (WUE)”
Claim · model-written summary
Mulching increased fruit yield and fruit number.
- Taxon
- sweet pepper crop
Capsicum annuumt0 - Treatment
- mulchinge0
- Outcome
- fruit yield and numbere0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the fruit yield and number were higher in the treatments with mulching”
t0“SWEET PEPPER CROP”
Claim · model-written summary
Polyethylene mulch reduced irrigation frequency and volume applied.
- Taxon
- sweet pepper crop
Capsicum annuumt0 - Treatment
- polyethylene mulchinge0
- Outcome
- irrigation number and water volume appliede0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“polyethylene mulching showed to be an efficient technique to reduce irrigation number and water volume applied”
t0“SWEET PEPPER CROP”
Claim · model-written summary
Mulch efficiency decreased as soil water content fell.
- Taxon
- sweet pepper crop
Capsicum annuumt0 - Treatment
- soil water content decreasese0
- Outcome
- efficiencye0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“This efficiency was reduced with soil water content decreases based on fruit yield.”
t0“SWEET PEPPER CROP”
Claim · model-written summary
Pepper plants showed osmotic adjustment and water stress tolerance.
Verbatim
e0“Pepper plants showed good osmotic adjustment and, consequently, tolerance to water stress.”
The same questions in other papers
drought · quality: postharvest · Capsicum annuum (sweet pepper)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
mulching · yield · Capsicum annuum (sweet pepper)Positive and negative results
34 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
33 papers more in this group
See all 37 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.