HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (13) Citing Articles via Google Scholar Google Scholar Articles by Pedersen, P. Articles by Lauer, J. G. Search for Related Content PubMed Articles by Pedersen, P. Articles by Lauer, J. G. Agricola Articles by Pedersen, P. Articles by Lauer, J. G. Related Collections Soybean Crop Growth and Development Other Crop Management

Soybean Growth and Development in Various Management Systems and Planting Dates

^a Dep. of Agronomy, Iowa State Univ., 2104 Agronomy Hall, Ames, IA 50011
^b Dep. of Agronomy, Univ. of Wisconsin, Moore Hall, 1575 Linden Dr., Madison, WI 53706

View larger version (28K): [in a new window]   Fig. 1. Total number of nodes on the mainstem for (A) cultivars (Hardin, CX232, and Spansoy 250), (B) planting dates (early May and late May), and (C) management systems (CT, Irr. = irrigated, conventional tillage management system at Arlington; CT = conventional tillage at Arlington; NT, Irr. = irrigated, no-tillage management system at Arlington; NT = no-tillage management system at Arlington; and Sand, Irr. = irrigated, conventional tillage management system at Hancock) during 1998-1999. Reproductive growth stages are shown for the two planting dates. Vertical bars represent the LSD (P 0.05) on dates when significant differences were found.

View larger version (27K): [in a new window]   Fig. 2. Plant height for (A) cultivars (Hardin, CX232, and Spansoy 250), (B) planting dates (early May and late May), and (C) management systems (CT, Irr. = irrigated, conventional tillage management system at Arlington; CT = conventional tillage at Arlington; NT, Irr. = irrigated, no-tillage management system at Arlington; NT = no-tillage management system at Arlington; and Sand, Irr. = irrigated, conventional tillage management system at Hancock) during 1998-1999. Reproductive growth stages are shown for the two planting dates. Vertical bars represent the LSD (P 0.05) on dates when significant differences were found.

View larger version (28K): [in a new window]   Fig. 3. Total aboveground dry matter (DM) for (A) cultivars (Hardin, CX232, and Spansoy 250), (B) planting dates (early May and late May), and (C) management systems (CT, Irr. = irrigated, conventional tillage management system at Arlington; CT = conventional tillage at Arlington; NT, Irr. = irrigated, no-tillage management system at Arlington; NT () = no-tillage management system at Arlington; and Sand, Irr. = irrigated, conventional tillage management system at Hancock) during 1998-1999. Reproductive growth stages are shown for the two planting dates. Vertical bars represent the LSD (P 0.05) on dates when significant differences were found.

View larger version (26K): [in a new window]   Fig. 4. Leaf area index (LAI) for (A) cultivars (Hardin, CX232, and Spansoy 250), (B) planting dates (early May and late May), and (C) management systems (CT, Irr. = irrigated, conventional tillage management system at Arlington; CT = conventional tillage at Arlington; NT, Irr. = irrigated, no-tillage management system at Arlington; NT = no-tillage management system at Arlington; and Sand, Irr. = irrigated, conventional tillage management system at Hancock) during 1998-1999. Reproductive growth stages are shown for the two planting dates. Vertical bars represent the LSD (P 0.05) on dates when significant differences were found.

View larger version (27K): [in a new window]   Fig. 5. Percentage of total dry matter (DM) present in leaves for (A) cultivars (Hardin, CX232, and Spansoy 250), (B) planting dates (early May and late May), and (C) management systems (CT, Irr. = irrigated, conventional tillage management system at Arlington; CT = conventional tillage at Arlington; NT, Irr. = irrigated, no-tillage management system at Arlington; NT () = no-tillage management system at Arlington; and Sand, Irr. = Irrigated, conventional tillage management system at Hancock) during 1998-1999. Reproductive growth stages are shown for the two planting dates. Vertical bars represent the LSD (P 0.05) on dates when significant differences were found.

View larger version (28K): [in a new window]   Fig. 6. Percentage of total dry matter (DM) present in stems for (A) cultivars (Hardin, CX232, and Spansoy 250), (B) planting dates (early May and late May), and (C) management systems (CT, Irr. = irrigated, conventional tillage management system at Arlington; CT = conventional tillage at Arlington; NT, Irr. = irrigated, no-tillage management system at Arlington; NT = no-tillage management system at Arlington; and Sand, Irr. = irrigated, conventional tillage management system at Hancock) during 1998-1999. Reproductive growth stages are shown for the two planting dates. Vertical bars represent the LSD (P 0.05) on dates when significant differences were found.

View larger version (28K): [in a new window]   Fig. 7. Crop growth rate (CGR) for (A) cultivars (Hardin, CX232, and Spansoy 250), (B) planting dates (early May and late May), and (C) management systems (CT, Irr. = irrigated, conventional tillage management system at Arlington; CT = conventional tillage at Arlington; NT, Irr. = irrigated, no-tillage management system at Arlington; NT = no-tillage management system at Arlington; and Sand, Irr. = irrigated, conventional tillage management system at Hancock) during 1998-1999. Reproductive growth stages are shown for the two planting dates. Vertical bars represent the LSD (P 0.05) on dates when significant differences were found.