scholarly journals Evaluation of groundwater quality and selected hydrologic conditions in the South Coast aquifer, Santa Isabel area, Puerto Rico, 2008–09

2013 ◽  
Author(s):  
José M. Rodríguez
Keyword(s):  
Puerto Rico ◽  
Groundwater Quality ◽  
South Coast ◽  
The South ◽  
Hydrologic Conditions

SYSTEMS-BASED LAND-USE EVALUATION AT THE SOUTH COAST OF PUERTO RICO

1998 ◽  
Vol 14 (2) ◽  
pp. 191-200 ◽  
Author(s):  
J. W. Hansen ◽  
F. H. Beinroth ◽  
J. W. Jones
Keyword(s):  
Land Use ◽  
Puerto Rico ◽  
South Coast ◽  
The South

Potential evapotranspiration for the south coast of Puerto Rico with the Hargreaves-Samani technique

1969 ◽  
Vol 72 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Megh R. Goyal
Keyword(s):  
Water Management ◽  
Puerto Rico ◽  
Potential Evapotranspiration ◽  
South Coast ◽  
Semiarid Region ◽  
Crop Water ◽  
The South ◽  
Water Requirements ◽  
Vegetables And Fruits ◽  
Maximum Minimum

The Hargreaves and Samani model was used to estimate monthly potential evapotranspiration (PET) for Central Aguirre, Fortuna and Lajas substations and Magueyes Island located on the south coast of Puerto Rico. The model uses maximum, minimum and average temperatures. Daily PET varies from 3.68 to 5.37 mm/day in the region with minimum in December and maximum in July. Annual PET was 1613.3 mm/year for Central Aguirre, 1653.5 for Fortuna, 1846.9 for Lajas, 1857.9 for Magueyes Island, with a regional average of 1704.6. These PET values can be used to estimate crop water requirements for vegetables and fruits, to plan irrigation and water management projects, and to schedule irrigation in the semiarid region of Puerto Rico.

Sequential sampling plan for corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), in corn fields on the south coast of Puerto Rico.

1969 ◽  
Vol 92 (3-4) ◽  
pp. 207-214
Author(s):  
Lymari M. Calero-Toledo ◽  
Raúl Macchiavelli ◽  
Ángel L. González
Keyword(s):  
Puerto Rico ◽  
Helicoverpa Zea ◽  
Sequential Sampling ◽  
Corn Earworm ◽  
Sampling Plan ◽  
South Coast ◽  
Effective Control ◽  
The South ◽  
Sequential Sampling Plan ◽  
Corn Fields

The corn earworm, Helicoverpa zea (Boddie), is the major insect pest of corn, Zea mays L., in Puerto Rico. The objective of this study was to design a sequential sampling plan with fixed precision levels for H. zea (Boddie) in corn fields on the south coast of Puerto Rico. For determining the presence (= 1) or absence (= 0) of H. zea eggs, 25 corn plants were randomly sampled from December 2003 to March 2004. Data were analyzed by using the beta binomial distribution. Critical density levels of 0.10 and 0.08 infested plants, before and after the emergence of ear silks, were used for Iwao's and converging lines formulae. A converging line sampling plan is recommended because it selected a smaller average sample size. This plan can be used to make cost effective control decisions on field corn in Puerto Rico.

scholarly journals Groundwater-Quality Data in the South Coast Interior Basins Study Unit, 2008: Results from the California GAMA Program

Data Series ◽  
10.3133/ds463 ◽  
2009 ◽  
Author(s):  
Timothy M. Mathany ◽  
Justin T. Kulongoski ◽  
Mary C. Ray ◽  
Kenneth Belitz
Keyword(s):  
Groundwater Quality ◽  
South Coast ◽  
Quality Data ◽  
The South ◽  
Study Unit
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